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Co-authored-by: brainfucker8oldman <brainfucker8oldman@platimail.com>
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Implement a sharded ClickHouse DataSource for Spring Boot to provide robust, load-balanced, and fault-tolerant connectivity to ClickHouse clusters.
This PR introduces a custom
DataSourcethat manages multiple Hikari connection pools, one for each ClickHouse shard. It includes a weighted round-robin load balancer and a mechanism to automatically detect and exclude unhealthy shards upon network errors, ensuring high availability and efficient query distribution. Health checks periodically attempt to restore unhealthy shards.